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Chart of common mesh mesh size and wedge wire screen slot size

Mesh, is the number of holes, that is, the number of holes per square inch. The larger the mesh size, the smaller the aperture. In general, mesh × pore size (microns) = 15,000. For example, the 400-mesh screen has a pore size of about 38 microns and the 500-mesh screen has a pore size of about 30 microns. Due to the problem of opening rate, that is, because of the different thickness of the wire used for braiding, the standards of different countries are different. There are three kinds of standards in the United States, the British standard and the Japanese standard. The similarities between Britain and the United States Japan's difference is larger. Our country uses the American standard, that is, it can be calculated by the formula given above.